Speaking of aerials, what's this....

[R D S]

[RobH]

A vertical aerial for whatever frequency it was designed for.

[The Nomad]

Likely VHF comms ? 2M amateur radio?

Avpx

[Jeff Layman]

Dunno, but it looks like it would make a pretty good lightning conductor.

[S]

a FM quarter wave end fed metal rod? Would be about 765 mm long....

[Jimmy Stewart ...]

looks like crap coax anyway ....

[Fredxx]

It looks reminiscent of CB aerials.

[Harry Bloomfield, Esq.]

Jimmy Stewart ... wrote on 29/01/2021 :

The coax looks to be decent stuff, but very poorly installed. The antenna seems not to have a ground plane.

[Jeff Layman]

? That aerial extends vertically perhaps 4 or 5 metres above the chimney. I would be surprised if it isn't one of the highest points in the street.

[Owain Lastname]

Local taxi?

Owain

[williamwright]

The thing at the top could be a glass fibre colinear* for anything VHF or UHF, including RSL VHF FM radio. Or it could be an old Aerialite AM aerial (they had a coax feeder). Or anything really!

The mast and chimney brackets are very old. The corner plates have almost rusted away. It looks as if an old mast and bracket pair has been re-purposed, and lowered.

The two contract-quality UHF TV aerials are of different historic channel groups; a Gp A and a Gp CD. The two TV aerial on the opposite corner are the same, except that the top one has been replaced because the boom on the top one snapped due to the U bolt hole being oversized.

If this is a shared chimney, the other corner belonging to the same house as the tall aerial has what looks like a vertical dipole for something or other, could be VHF FM but it looks a bit too long. There's another aerial of some sort on the same fixing. These are much newer than the tall mast (look at the corner plate nearest the camera).

*colinear: several dipoles in a stack, inside a shroud of some sort. Gives a bit more gain than a single halfwave dipole.

Bill

[Fred]

The top one doesn't need one.

[Jimmy Stewart]

looks like tv 75ohn coax to me

[Harry Bloomfield, Esq.]

Looks much thicker to me..

[Jimmy Stewart]

oh right

[Jimmy Stewart]

why do you want to know ..... ?

[R D S]

Cos my wifi doesn't work properly! Or my wireless keyboard and mouse.

I'm clutching at straws for possible causes.

[Andy Burns]

That's *way* bigger than a 2.4 or 5 GHz aerial.

[John Rumm]

Yup, if you zoom into the photo, it's more than double the diameter of the adjacent TV aerial coax attached to that bottom Yagi...

[The Natural Philosopher]

CB radio i'd say - ten four blah blah